(19)

(11)

EP 0 122 935 A1

(12)

(43) Date of publication: 31.10.1984 Bulletin 1984/44 (21) Application number: 83903680.0 (22) Date of filing: 18.10.1983

(51) International Patent Classification (IPC):  C07C 203/ 00( . ) (86) International application number: PCT/US1983/001610 (87) International publication number: WO 1984/001770 (10.05.1984 Gazette 1984/12)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 25.10.1982 US 19820436634 (71) Applicant: BOARD OF CONTROL OF MICHIGAN TECHNOLOGICAL UNIVERSITY Houghton, Michigan 49931 (US)	(72) Inventor: MENDENHALL, G., David Hancock, MI 49930 (US)